禁止鼠标右键和F12

 1 //禁止鼠标右键和F12
 2 function click(e) {
 3     if (document.all) {
 4         if (event.button==2||event.button==3) { 
 5             alert("欢迎光临寒舍，有什么需要帮忙的话，请与管理员联系！谢谢您的合作！！");
 6             oncontextmenu='return false';
 7         }
 8     }
 9     if (document.layers) {
10         if (e.which == 3) {
11             oncontextmenu='return false';
12         }
13     }
14 }
15 if (document.layers) {
16     document.captureEvents(Event.MOUSEDOWN);
17 }
18 document.onmousedown=click;
19 document.oncontextmenu = new Function("return false;")
20 document.onkeydown = document.onkeyup = document.onkeypress = function () {
21     if (window.event.keyCode == 123) {
22         window.event.returnValue = false;
23         return (false);
24     }
25 }